MouseArea incorrectly reports containsMouse when visibility changes

import QtQuick 2.1
import QtQuick.Window 2.0

Window {
    id: root
    width: 640
    height: 480
    MouseArea {
        id: mouseArea
        anchors.fill: parent
        hoverEnabled: true
        visible: false
        Component.onCompleted: {
            print ("before " + containsMouse)
            visible = true
            print ("after " + containsMouse)
        }
    }
}